CN110289121A - A kind of alloy aluminium paste for PERC rear surface of solar cell - Google Patents
A kind of alloy aluminium paste for PERC rear surface of solar cell Download PDFInfo
- Publication number
- CN110289121A CN110289121A CN201910529096.3A CN201910529096A CN110289121A CN 110289121 A CN110289121 A CN 110289121A CN 201910529096 A CN201910529096 A CN 201910529096A CN 110289121 A CN110289121 A CN 110289121A
- Authority
- CN
- China
- Prior art keywords
- alloy
- glass powder
- perc
- solar cell
- rear surface
- Prior art date
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- Granted
Links
- 239000000956 alloy Substances 0.000 title claims abstract description 63
- 239000004411 aluminium Substances 0.000 title claims abstract description 63
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 63
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 63
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 55
- 101001073212 Arabidopsis thaliana Peroxidase 33 Proteins 0.000 title claims abstract description 41
- 101001123325 Homo sapiens Peroxisome proliferator-activated receptor gamma coactivator 1-beta Proteins 0.000 title claims abstract description 41
- 102100028961 Peroxisome proliferator-activated receptor gamma coactivator 1-beta Human genes 0.000 title claims abstract description 41
- 239000000843 powder Substances 0.000 claims abstract description 86
- 239000011521 glass Substances 0.000 claims abstract description 62
- 229910000632 Alusil Inorganic materials 0.000 claims abstract description 17
- 238000009835 boiling Methods 0.000 claims abstract description 9
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052709 silver Inorganic materials 0.000 claims abstract description 6
- 239000004332 silver Substances 0.000 claims abstract description 6
- 239000002245 particle Substances 0.000 claims description 23
- 238000002360 preparation method Methods 0.000 claims description 17
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 12
- 229910052760 oxygen Inorganic materials 0.000 claims description 12
- 239000001301 oxygen Substances 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 10
- 229910052736 halogen Inorganic materials 0.000 claims description 8
- -1 alcohol ester Chemical class 0.000 claims description 6
- 150000002367 halogens Chemical class 0.000 claims description 6
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 claims description 6
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 claims description 5
- 229910052788 barium Inorganic materials 0.000 claims description 5
- 229910052791 calcium Inorganic materials 0.000 claims description 5
- 229910052712 strontium Inorganic materials 0.000 claims description 5
- OAYXUHPQHDHDDZ-UHFFFAOYSA-N 2-(2-butoxyethoxy)ethanol Chemical compound CCCCOCCOCCO OAYXUHPQHDHDDZ-UHFFFAOYSA-N 0.000 claims description 4
- 229910052784 alkaline earth metal Chemical group 0.000 claims description 4
- 150000001342 alkaline earth metals Chemical group 0.000 claims description 4
- VXQBJTKSVGFQOL-UHFFFAOYSA-N 2-(2-butoxyethoxy)ethyl acetate Chemical compound CCCCOCCOCCOC(C)=O VXQBJTKSVGFQOL-UHFFFAOYSA-N 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- RBNWAMSGVWEHFP-UHFFFAOYSA-N trans-p-Menthane-1,8-diol Chemical compound CC(C)(O)C1CCC(C)(O)CC1 RBNWAMSGVWEHFP-UHFFFAOYSA-N 0.000 claims description 3
- 239000001293 FEMA 3089 Substances 0.000 claims description 2
- 229910016285 MxNy Inorganic materials 0.000 claims description 2
- PRXRUNOAOLTIEF-ADSICKODSA-N Sorbitan trioleate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OC[C@@H](OC(=O)CCCCCCC\C=C/CCCCCCCC)[C@H]1OC[C@H](O)[C@H]1OC(=O)CCCCCCC\C=C/CCCCCCCC PRXRUNOAOLTIEF-ADSICKODSA-N 0.000 claims description 2
- 239000004147 Sorbitan trioleate Substances 0.000 claims description 2
- 229910052783 alkali metal Inorganic materials 0.000 claims description 2
- 150000001340 alkali metals Chemical group 0.000 claims description 2
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Inorganic materials O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 claims description 2
- 229910052792 caesium Inorganic materials 0.000 claims description 2
- 229910052700 potassium Inorganic materials 0.000 claims description 2
- 229910052701 rubidium Inorganic materials 0.000 claims description 2
- 229910052708 sodium Inorganic materials 0.000 claims description 2
- 229960000391 sorbitan trioleate Drugs 0.000 claims description 2
- 235000019337 sorbitan trioleate Nutrition 0.000 claims description 2
- 239000005355 lead glass Substances 0.000 claims 1
- 238000011049 filling Methods 0.000 abstract description 7
- 239000003960 organic solvent Substances 0.000 abstract description 7
- 239000002270 dispersing agent Substances 0.000 abstract description 4
- 239000011148 porous material Substances 0.000 abstract description 4
- 239000006187 pill Substances 0.000 abstract description 3
- 239000001856 Ethyl cellulose Substances 0.000 abstract 1
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 abstract 1
- 229920001249 ethyl cellulose Polymers 0.000 abstract 1
- 235000019325 ethyl cellulose Nutrition 0.000 abstract 1
- 239000013008 thixotropic agent Substances 0.000 abstract 1
- 239000002994 raw material Substances 0.000 description 12
- 239000000463 material Substances 0.000 description 10
- 239000002002 slurry Substances 0.000 description 9
- 238000000576 coating method Methods 0.000 description 7
- 238000001035 drying Methods 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 6
- 239000006185 dispersion Substances 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 238000002844 melting Methods 0.000 description 6
- 230000008018 melting Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000002161 passivation Methods 0.000 description 6
- 238000010792 warming Methods 0.000 description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 5
- 229910052710 silicon Inorganic materials 0.000 description 5
- 239000010703 silicon Substances 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- WMWLMWRWZQELOS-UHFFFAOYSA-N bismuth(iii) oxide Chemical compound O=[Bi]O[Bi]=O WMWLMWRWZQELOS-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- GHPGOEFPKIHBNM-UHFFFAOYSA-N antimony(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Sb+3].[Sb+3] GHPGOEFPKIHBNM-UHFFFAOYSA-N 0.000 description 3
- 239000011575 calcium Substances 0.000 description 3
- 239000000470 constituent Substances 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000227 grinding Methods 0.000 description 3
- 230000006798 recombination Effects 0.000 description 3
- 238000005215 recombination Methods 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 101100496858 Mus musculus Colec12 gene Proteins 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 239000012752 auxiliary agent Substances 0.000 description 2
- 238000000498 ball milling Methods 0.000 description 2
- 229910001626 barium chloride Inorganic materials 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000001110 calcium chloride Substances 0.000 description 2
- 229910001628 calcium chloride Inorganic materials 0.000 description 2
- 229910001640 calcium iodide Inorganic materials 0.000 description 2
- 229910052681 coesite Inorganic materials 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 229910052906 cristobalite Inorganic materials 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052573 porcelain Inorganic materials 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 229910052682 stishovite Inorganic materials 0.000 description 2
- 229910052905 tridymite Inorganic materials 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- UNMYWSMUMWPJLR-UHFFFAOYSA-L Calcium iodide Chemical compound [Ca+2].[I-].[I-] UNMYWSMUMWPJLR-UHFFFAOYSA-L 0.000 description 1
- FJDQFPXHSGXQBY-UHFFFAOYSA-L Cs2CO3 Substances [Cs+].[Cs+].[O-]C([O-])=O FJDQFPXHSGXQBY-UHFFFAOYSA-L 0.000 description 1
- KOPBYBDAPCDYFK-UHFFFAOYSA-N Cs2O Inorganic materials [O-2].[Cs+].[Cs+] KOPBYBDAPCDYFK-UHFFFAOYSA-N 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- AYJRCSIUFZENHW-UHFFFAOYSA-L barium carbonate Inorganic materials [Ba+2].[O-]C([O-])=O AYJRCSIUFZENHW-UHFFFAOYSA-L 0.000 description 1
- WDIHJSXYQDMJHN-UHFFFAOYSA-L barium chloride Chemical compound [Cl-].[Cl-].[Ba+2] WDIHJSXYQDMJHN-UHFFFAOYSA-L 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 229910000024 caesium carbonate Inorganic materials 0.000 description 1
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Substances [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000012876 carrier material Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000006071 cream Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- AKUNKIJLSDQFLS-UHFFFAOYSA-M dicesium;hydroxide Chemical compound [OH-].[Cs+].[Cs+] AKUNKIJLSDQFLS-UHFFFAOYSA-M 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 229910052571 earthenware Inorganic materials 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- 235000008216 herbs Nutrition 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 239000001023 inorganic pigment Substances 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052714 tellurium Inorganic materials 0.000 description 1
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
- B22F1/107—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material containing organic material comprising solvents, e.g. for slip casting
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/05—Mixtures of metal powder with non-metallic powder
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/20—Conductive material dispersed in non-conductive organic material
- H01B1/22—Conductive material dispersed in non-conductive organic material the conductive material comprising metals or alloys
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/0216—Coatings
- H01L31/02161—Coatings for devices characterised by at least one potential jump barrier or surface barrier
- H01L31/02167—Coatings for devices characterised by at least one potential jump barrier or surface barrier for solar cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/0224—Electrodes
- H01L31/022408—Electrodes for devices characterised by at least one potential jump barrier or surface barrier
- H01L31/022425—Electrodes for devices characterised by at least one potential jump barrier or surface barrier for solar cells
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/05—Metallic powder characterised by the size or surface area of the particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2301/00—Metallic composition of the powder or its coating
- B22F2301/05—Light metals
- B22F2301/052—Aluminium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2304/00—Physical aspects of the powder
- B22F2304/10—Micron size particles, i.e. above 1 micrometer up to 500 micrometer
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Abstract
The invention discloses a kind of alloy aluminium pastes for PERC rear surface of solar cell, with the weight of the alloy aluminium paste for 100%, the alloy silver paste includes that following components is prepared according to weight percent: 35~56.5% alusil alloy powder, 17.5~37.5% aluminium powder, 1~2% lead-free glass powder, 15~20% organic solvent, 3~5% ethyl cellulose, 0.05~0.1% thixotropic agent and 0.5~1.5% dispersing agent, and the alloy pulp is applied to 0.5~1% PERC solar battery that passivating film total open area accounts for solar-electricity pool area, the alloy aluminium paste is used for low aperture opening ratio PERC solar battery, especially passivating film total open area 0.5~1% rear electrode that accounts for solar-electricity pool area , pore filling ratios are good, and the BSF layer formed is complete and uniform, and aluminium pill is reduced, and boiling performance is preferable with adhesion.
Description
Technical field
The present invention relates to a kind of rear surface of solar cell aluminium pastes, and in particular to a kind of for PERC rear surface of solar cell
Alloy aluminium paste.
Background technique
PERC technology, i.e. passivation emitter rear-face contact promote conversion by forming passivation layer in rear surface of solar cell
Efficiency.PERC battery has simple process, and cost is relatively low, and the advantage high with existing production line for manufacturing battery compatibility, is expected to become
The main flow direction of the following high performance solar batteries.
PERC technology improves transformation efficiency by adding a dielectric passivation layer on the back side of battery.Normal cell
Higher level of efficiency is limited to the trend of light induced electron recombination in structure.PERC battery maximizes the potential for spanning P-N junction
Gradient, this flowing for making electronics more stable reduce electron recombination and higher level of efficiency.
The characteristics of PERC battery is: (1) tow sides of battery all deposit passivating film;(2) aluminium paste of back surface field directly covers
Overleaf localized contact is formed with silicon substrate on passivating film.According to the design feature of PERC battery, battery need passivation on double surfaces and
Rear side local contact improves cell conversion efficiency so that surface recombination be greatly lowered.Passivation on double surfaces then requires battery two sides all
Deielectric-coating need to be plated, rear side local contact then needs the back side to open film, therefore the process flow of PERC battery are as follows: (1) alkali making herbs into wool;(2)
POCl2Diffusion;(3) wet process back-etching;(4) passivation on double surfaces film;(5) back side dielectric film aperture;(6) it metallizes.Wherein,
The chemical industry of PERC battery metal still can use silk-screen printing technique, but since the back side of PERC battery is to the property of electrocondution slurry
The requirement different from conventional batteries slurry can be proposed.
The overleaf localized metallic stage can encounter Al-BSF cavity problem, the i.e. not formed aluminium in partial metallic contact region
Back surface field, silicon dissolve into aluminium and form cavity, will cause the raising of contact resistance and the decline of fill factor.PERC battery is to the back side
Aluminium paste basic demand is as follows: (1) it is good to open filling effect at film;(2) low to the damage of deielectric-coating;(3) it is formed continuous, uniform
, the suitably local Al-BSF (LBSF) of thickness;(4) have good reliability, such as adhesion, ageing-resistant performance.With
The fast development of PERC battery, demand of the market to PERC battery special-purpose metal electrocondution slurry are more more and more intense.
Taiwan Patent TW201827530A provides a kind of solar cell paste constituent, and the present invention provides a kind of cream
Shape constituent includes glass powder, organic carrier and conductive material specifically, solar cell paste constituent,
It is characterized in, (1) described conductive material, Al-X alloy powder 40 mass % or more of the fusing point between 660~800 DEG C;(2) institute
The element X for the Al-X alloy powder stated is at least one in silicon, barium, bismuth, calcium, germanium, indium, lanthanum, nickel, lead, antimony, strontium, tellurium and yttrium
Kind, the alloy pulp being prepared using the technology accounts for the 0.5~1% of solar-electricity pool area in passivating film total open area
Pore filling ratios in PERC solar battery are not high, and the BSF layer formed is irregular.
Summary of the invention
Goal of the invention: to solve the above-mentioned problems, that the present invention provides a kind of hole filling rates is high, can formation rule
The low alloy aluminium paste for PERC rear surface of solar cell of the corrosivity of BSF layers and slurry, specific technical solution are as follows:
Technical solution: the object of the present invention is to provide a kind of alloy aluminium paste for PERC rear surface of solar cell, skills
Art point is: with the weight of the alloy aluminium paste for 100%, the alloy aluminium paste includes following components system according to weight percent
It is standby to form:
The weight ratio of the alusil alloy powder and aluminium powder is 1~3:1, the median particle diameter D of the alusil alloy50For 5~6 μ
M, the content of oxygen is 0.3~0.4wt%, the median particle diameter D of the aluminium powder in the alusil alloy50It is 7~8 μm, the aluminium powder
The content of middle oxygen is 0.35~0.45wt%.
In an embodiment of the present invention, the lead-free glass powder is mixed with to obtain by glass powder A and glass powder B, with institute
The weight for stating lead-free glass powder is 100%, and the weight of the glass powder A is 60~90%, the weight of the glass powder B is 10~
40%, the median particle diameter D of the glass powder A50It is 1~3 μm, the softening temperature of the glass powder A is 500~600 DEG C, the glass
The median particle diameter D of glass powder B50It is 1.3~1.8 μm, the softening temperature of the glass powder B is 400~450 DEG C.
In an embodiment of the present invention, with the weight of the glass powder A for 100%, the glass powder A is according to weight percent
Than by 0~40% ZnO, 1~40% B2O3, 30~40% Sb2O3With 0~70% MxNyIt is prepared, wherein element M
For alkali metal, perhaps alkaline-earth metal N is O element or CO3Perhaps at least one of halogen x be 1 or 2, y be 1 or
Person 2.
In an embodiment of the present invention, it is best that the element M, which is at least one of Ba, Ca, Sr, Na, K, Rb and Cs,.
In an embodiment of the present invention, with the weight of the glass powder B for 100%, the glass powder B is according to weight percent
Than the V by 10~50%2O5, 0~30% ZnO, 5~40%B2O3, 0~20% P2O5Or P2(CO3)5, 0~20%
WO3Or MoO3, 10~40% RQzIt is prepared, wherein element R is alkaline-earth metal, and Q is O element or CO3Or halogen family
At least one of element, z are 1 or 2.
In an embodiment of the present invention, it is best that the element R, which is selected from least one of Ba, Ca and Sr,.
In an embodiment of the present invention, the boiling point of the organic solvent is 170~250 DEG C.
In an embodiment of the present invention, the organic solvent is selected from butyl carbitol, butyl carbitol acetate, alcohol ester ten
Two, one of butyl glycol ether, terpinol and turpentine oil or several.
In an embodiment of the present invention, the dispersing agent is selected from TDO, sorbitan trioleate, BYK-110 and BYK-
One of 111 or several mixing.
Wherein, TDO is a kind of special superpower wetting dispersing agent of double ion long-chain, is suitble to prepare various aqueous and oiliness
Organic and inorganic painting slurry has high surface, therefore has outstanding performance, migrates coating during film curing,
It is firmly adsorbed on the surface of solids, to reach ideal effect.
BYK-110 makes coating solution flocculate by steric hindrance.Due to solving flocculated coating particles very little, to can get height
Gloss promotes color intensity.In addition, increasing transparency and covering power.These products reduce viscosity, thus improve levelling
Property, and the content of coating can be improved.
BYK-111 is not solvent-laden wetting dispersing agent, for solvent type and solventless coatings and printing ink, Ke Yiwen
Determine inorganic pigment, especially titanium dioxide.It is substantially reduced mill base viscosity.
In above-mentioned all embodiments, the alloy aluminium paste is applied to passivating film total open area and accounts for solar battery
The PERC solar battery of the 0.5~1% of area.
The utility model has the advantages that specific advantage of the invention is as follows:
(1) in a kind of formula for the alloy aluminium paste of PERC rear surface of solar cell of the invention there are also 35~
The alusil alloy of 56.5wt%, the median particle diameter D of the alusil alloy50It is 5~6 μm, the content of oxygen is 0.3 in the alusil alloy
~0.4wt%, the median particle diameter D of the aluminium powder50It is 7~8 μm, the content of oxygen is 0.35~0.45wt% in the aluminium powder, should
The activity of alloy pulp can be improved in alusil alloy, to improve the pore filling ratios of alloy pulp.
(2) a kind of formula of alloy aluminium paste for PERC rear surface of solar cell of the invention is reasonable, opens suitable for low
Mouth rate PERC solar battery, especially passivating film total open area account for 0.5~1% back side electricity of solar-electricity pool area
The pore filling ratios of pole, alloy aluminium paste printing of the invention are good, and the BSF layer formed is complete and uniform, and aluminium pill is reduced, boiling
It can be preferable with adhesion.
(3) using organic solvent in a kind of formula for the alloy aluminium paste of PERC rear surface of solar cell of the invention
Boiling point is 170~250 DEG C, and butyl carbitol, butyl carbitol acetate, alcohol ester 12, butyl glycol ether, terpinol and pine
The wellability and volatility of fuel-economizing are relatively good, reduce destruction of the organic carrier to silicon substrate in sintering process.
(4) two kinds of glass powders are used in a kind of formula for the alloy aluminium paste of PERC rear surface of solar cell of the invention
Mixing, two kinds of glass powders of the invention are free of Pb, comply fully with the requirement of environmental protection, the present invention is using the glass powder compounded, originally
The glass powder of invention is that alkalescent can effectively reduce glass powder to the corrosivity of silicon substrate.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, so that the technology of this field
Personnel can better understand advantages and features of the invention, to make apparent boundary to protection scope of the present invention
It is fixed.Embodiment described in the invention is only a part of the embodiment of the present invention, instead of all the embodiments, based on the present invention
In embodiment, those of ordinary skill in the art's every other implementation obtained without making creative work
Example, shall fall within the protection scope of the present invention.
Embodiment 1
1. the preparation of lead-free glass powder
The preparation of glass powder A: with the weight of glass powder A for 100%, prepare 20% ZnO, 20% B2O3, 35%
Sb2O3, 5% BaCl2, 10%Na2CO3With 10% Rb2O2, the present embodiment is using BaCl2The metal of other halogens
Compound is equally applicable by adjusting adding proportion, then says each object using mixing machine known to dispersion machine or three-roller etc.
Material is uniformly mixed, and 3.5h is then dried, then goes to the raw material of drying process in crucible, then will be loaded with raw material
Crucible be placed into heating chamber and be first warming up to 950 DEG C, then keep the temperature 1.5h, the feed liquid for then completing melting is through cooling
Roller obtains frit, is then crushed frit, sieves to obtain median particle diameter D50It is 1.36 μm, softening temperature 544.7
DEG C glass powder A.
The preparation of frit B: with the weight of glass powder B for 100%, prepare 30% V2O5, 15% ZnO, 22%
B2O3, 10% P2O5, 10% WO3, 5% BaCO3CaO with 8%, is then mixed using known to dispersion machine or three-roller etc.
Conjunction machine says that each material is uniformly mixed, and 3h is then dried, then goes to the raw material of drying process in crucible, then will
The crucible for being loaded with raw material, which is placed into heating chamber, is first warming up to 1000 DEG C, then keeps the temperature 1h, the material for then completing melting
Liquid obtains frit through chill roll, is then crushed frit, sieves to obtain median particle diameter D50It is 1.33 μm, softening temperature
The glass powder B that degree is 405 DEG C.
2. the preparation of alloy pulp
With the weight of alloy aluminium paste for 100%, alloy silver paste of the invention includes following components system according to weight percent
It is standby to form:
Wherein, the median particle diameter D of alusil alloy50It is 5.5 μm, the content of oxygen is 0.35wt% in alusil alloy, aluminium powder
Median particle diameter D50It is 7.5 μm, the content of oxygen is 0.4wt% in aluminium powder, and the boiling point of organic solvent butyl glycol ether is 227 DEG C, will
Above-mentioned ready material is proportionally mixed, then carries out grinding distribution, so that the fineness for the slurry being prepared must not
More than 15 μm.
Embodiment 2
1. the preparation of lead-free glass powder
The preparation of glass powder A: with the weight of glass powder A for 100%, prepare 40% ZnO, 5% B2O3, 30%
Sb2O3, 5% SrCl, 10%Cs2CO3With 10% BaO, the present embodiment using other halogens of SrCl metallization
It closes object and is equally applicable by adjusting adding proportion, then say each material using mixing machine known to dispersion machine or three-roller etc.
It is uniformly mixed, 3h is then dried, then goes to the raw material of drying process in crucible, then the earthenware that raw material will be loaded with
Crucible, which is placed into heating chamber, is first warming up to 850 DEG C, then keeps the temperature 2h, and the feed liquid for then completing melting is obtained through chill roll
Then frit is crushed, sieves to obtain median particle diameter D by frit50It is 1.89 μm, the glass that softening temperature is 570 DEG C
Powder A.
The preparation of frit B: with the weight of glass powder B for 100%, prepare 50% V2O5, 5% ZnO, 5%B2O3、
5% P2(CO3)5, 5% WO3, 15% Sr2CO3With 15% CaI2, the present embodiment is using CaI2Other halogens
Metallic compound by adjust adding proportion be equally applicable, then said using mixing machine known to dispersion machine or three-roller etc.
Each material is uniformly mixed, and 3h is then dried, then goes to the raw material of drying process in crucible, then will be loaded with
The crucible of raw material, which is placed into heating chamber, is first warming up to 1000 DEG C, then keeps the temperature 1h, and the feed liquid for then completing melting is through cold
But roller obtains frit, is then crushed frit, sieves to obtain median particle diameter D50It is 1.64 μm, softening temperature 426
DEG C glass powder B.
2. the preparation of alloy pulp
With the weight of alloy aluminium paste for 100%, alloy silver paste of the invention includes following components system according to weight percent
It is standby to form:
Wherein, the median particle diameter D of alusil alloy50It is 6 μm, the content of oxygen is 0.4wt%, the intermediate value of aluminium powder in alusil alloy
Partial size D50It is 8 μm, the content of oxygen is 0.3wt% in aluminium powder, and the boiling point of organic solvent butyl carbitol and alcohol ester 12 is 231 DEG C
With 255 DEG C, above-mentioned ready material is proportionally mixed, then carry out grinding distribution, so that the slurry being prepared
Fineness must not exceed 15 μm.
Embodiment 3
1. the preparation of lead-free glass powder
The preparation of glass powder A: with the weight of glass powder A for 100%, prepare 10% ZnO, 30% B2O3, 30%
Sb2O3, 10% CaCl2, 10%K2CO3With 10% Cs2O, the present embodiment is using CaCl2The metal of other halogens
Compound is equally applicable by adjusting adding proportion, then says each object using mixing machine known to dispersion machine or three-roller etc.
Material is uniformly mixed, and 4h is then dried, then goes to the raw material of drying process in crucible, then will be loaded with raw material
Crucible, which is placed into heating chamber, is first warming up to 1050 DEG C, then keeps the temperature 2h, and the feed liquid for then completing melting is obtained through chill roll
To frit, then frit is crushed, sieves to obtain median particle diameter D50It is 2.17 μm, softening temperature is 530.6 DEG C
Glass powder A.
The preparation of frit B: with the weight of glass powder B for 100%, prepare 10% V2O5, 40% ZnO, 20%
B2O3, 5% P2(CO3)5, 10% MoO3, 5% CaCO3With 10% Sr2O, then using dispersion machine or three-roller etc.
The mixing machine known says that each material is uniformly mixed, and 3h is then dried, the raw material of drying process is then gone to crucible
It is interior, then the crucible for being loaded with raw material is placed into heating chamber and is first warming up to 1000 DEG C, 1h is then kept the temperature, it is then that melting is complete
At feed liquid through chill roll, obtain frit, then frit be crushed, sieves to obtain median particle diameter D50It is 1.45 μm,
The glass powder B that softening temperature is 435 DEG C.
2. the preparation of alloy pulp
With the weight of alloy aluminium paste for 100%, alloy silver paste of the invention includes following components system according to weight percent
It is standby to form:
Wherein, the median particle diameter D of alusil alloy50It is 5 μm, the content of oxygen is 0.3wt%, the intermediate value of aluminium powder in alusil alloy
Partial size D50It is 7 μm, the content of oxygen is 0.35wt% in aluminium powder, and organic solvent butyl glycol ether and terebinthine boiling point are respectively
227 DEG C and 173~175 DEG C, above-mentioned ready material is proportionally mixed, then carry out grinding distribution, so that preparation
The fineness of obtained slurry must not exceed 15 μm.
Comparative example 1
1. the preparation of glass powder
15 parts of B is weighed by mass parts2O3, 3 parts of SiO2, 15 parts of Bi2O3, 60 parts of PbO and 7 part of ZnO, use mixing
Machine be uniformly mixed, be packed into porcelain crucible, be put into Muffle furnace, in 900 DEG C, keep the temperature 1h, by the glass powder particle use after fusing from
After sub- water quenching, ball milling 2.5h is obtained through 200 meshes to partial size D90Glass powder less than 2 μm.
2. preparing cell back surface field aluminium paste
Aluminium is commercially available purity 99.9%, 1.0~2.5 μm of average grain diameter of aluminium powder, weighs 75 parts of aluminium powder by mass parts, glass
7 parts of powder, 15 parts of organic binder, 3 parts of auxiliary agent, remaining operates same embodiment.
Comparative example 2
1. the preparation of glass powder
17 parts of B is weighed by mass parts2O3, 1 part of SiO2, 13 parts of Bi2O3, 65 parts of PbO and 4 part of ZnO, use mixing
Machine be uniformly mixed, be packed into porcelain crucible, be put into Muffle furnace, in 900 DEG C, keep the temperature 1h, by the glass powder particle use after fusing from
After sub- water quenching, ball milling 2.5h is obtained through 200 meshes to partial size D90Glass powder less than 2 μm.
2. preparing cell back surface field aluminium paste
Aluminium powder is commercially available purity 99.9%, 1.0~2.5 μm of average grain diameter of aluminium powder, weighs 70 parts of aluminium powder by mass parts, glass
10 parts of glass powder, 17 parts of organic binder, 3 parts of auxiliary agent, remaining operates same embodiment.
Performance detection of the invention is analyzed as follows:
Then it is passed through 250 being screen printed onto of mesh by the electrocondution slurry of the preparation of Example 1~3 and comparative example 1,2
Film total open area accounts for the 0.5~1% of solar-electricity pool area, the monocrystalline silicon piece of the PERC battery of specification 125mm × 125mm
Electrode film is formed on back passive surface, is dried into 220 DEG C of Muffle furnace.After drying then aluminium electrode film layer changes another side without falling off
Front side silver paste is printed, is sintered into Muffle furnace, 780 DEG C of peak temperature, it is as shown in table 1 that its electrical data is tested after sintering.
1 electrical data table of table
As shown above, the incident photon-to-electron conversion efficiency of the alloy pulp for the PERC solar cell being prepared using the present invention
For 22.26-22.42%, relative to comparative example, photoelectric conversion efficiency is obviously increased, and the present invention is suitable for low aperture opening ratio PERC
Solar battery, especially passivating film total open area account for 0.5~1% rear electrode of solar-electricity pool area, gap
Filling rate is good, and the BSF layer formed is complete and uniform, and aluminium pill is reduced, and boiling performance is preferable with adhesion.
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than the present invention is protected
The limitation of range is protected, although explaining in detail referring to preferred embodiment to the present invention, those skilled in the art are answered
Work as understanding, it can be with modification or equivalent replacement of the technical solution of the present invention are made, without departing from the reality of technical solution of the present invention
Matter and range.
Claims (10)
1. a kind of alloy aluminium paste for PERC rear surface of solar cell, it is characterised in that: with the weight of the alloy aluminium paste
It is 100%, the alloy silver paste includes that following components is prepared according to weight percent:
The weight ratio of the alusil alloy powder and aluminium powder is 1~3:1, the median particle diameter D of the alusil alloy50For 5~6 μ
M, the content of oxygen is 0.3~0.4wt%, the median particle diameter D of the aluminium powder in the alusil alloy50It is 7~8 μm, it is described
Aluminium powder in oxygen content be 0.35~0.45wt%.
2. the alloy aluminium paste according to claim 1 for PERC rear surface of solar cell, it is characterised in that: the nothing
Lead glass powder is mixed with to obtain by glass powder A and glass powder B, with the weight of the lead-free glass powder for 100%, the glass
The weight of glass powder A is 60~90%, and the weight of the glass powder B is 10~40%, the median particle diameter D of the glass powder A50It is 1
~3 μm, the softening temperature of the glass powder A is 500~600 DEG C, the median particle diameter D of the glass powder B50It is 1.3~1.8 μm,
The softening temperature of the glass powder B is 400~450 DEG C.
3. the alloy aluminium paste according to claim 2 for PERC rear surface of solar cell, it is characterised in that: with described
The weight of glass powder A is 100%, and the glass powder A is according to weight percent by 0~40% ZnO, 1~40% B2O3、
30~40% Sb2O3With 0~70% MxNyIt is prepared, wherein element M is alkali metal or alkaline-earth metal, and N is O element
Or CO3Perhaps at least one of halogen x be 1 perhaps 2 y be 1 or 2.
4. the alloy aluminium paste according to claim 3 for PERC rear surface of solar cell, it is characterised in that: the member
Plain M is at least one of Ba, Ca, Sr, Na, K, Rb and Cs.
5. the alloy aluminium paste according to claim 2 for PERC rear surface of solar cell, it is characterised in that: with described
The weight of glass powder B be 100%, the glass powder B according to weight percent by 10~50% V2O5, 0~30% ZnO,
5~40%B2O3, 0~20% P2O5Or P2(CO3)5, 0~20% WO3Or MoO3, 10~40% RQzPreparation and
At wherein element R is alkaline-earth metal, and Q is O element or CO3Perhaps at least one of halogen z is 1 or 2.
6. the alloy aluminium paste according to claim 5 for PERC rear surface of solar cell, it is characterised in that: the member
Plain R is selected from least one of Ba, Ca and Sr.
7. the alloy aluminium paste according to claim 1 for PERC rear surface of solar cell, it is characterised in that: described has
The boiling point of solvent is 170~250 DEG C.
8. the alloy aluminium paste according to claim 1 for PERC rear surface of solar cell, it is characterised in that: described has
Solvent is in butyl carbitol, butyl carbitol acetate, alcohol ester 12, butyl glycol ether, terpinol and turpentine oil
It is one or several kinds of.
9. the alloy aluminium paste according to claim 1 for PERC rear surface of solar cell, it is characterised in that: point
Powder is selected from one of TDO, sorbitan trioleate, BYK-110 and BYK-111 or several mixing.
10. answering for the alloy aluminium paste of PERC rear surface of solar cell described in a kind of any one according to claim 1~9
With, it is characterised in that: the alloy aluminium paste is applied to passivating film total open area and accounts for the 0.5~1% of solar-electricity pool area
PERC solar battery.
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CN201910529096.3A CN110289121B (en) | 2019-06-19 | 2019-06-19 | Alloy aluminum paste for back of PERC solar cell |
US17/431,372 US11833584B2 (en) | 2019-06-19 | 2019-07-12 | Alloy aluminum paste for use on rear of PERC solar cell |
PCT/CN2019/095753 WO2020252828A1 (en) | 2019-06-19 | 2019-07-12 | Alloy aluminum paste used for back surface of perc solar cell |
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WO2020252828A1 (en) | 2020-12-24 |
CN110289121B (en) | 2021-10-26 |
US11833584B2 (en) | 2023-12-05 |
US20220134422A1 (en) | 2022-05-05 |
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